Brake for vehicles



(No Model.)

W. S. J OBES.

BRAKE FOR VEHICLES.

No. 424,677, Patented Apr. 1, 1890.

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WITNESSES W/Q/% A TTORNEYS.

N. PETERS, Pbowumo n mr. Waminglnm [LC UNITED STATES PATENT OFFICE.

\VINFIELD S. JOBES, OF \VEST LEISENRING, PENNSYLVANIA.

BRAKE FOR VEHICLES.

SPECIFICATION forming part of Letters Patent No. 424,677, dated April 1,1890.

Application filed September 26, 1889. Serial No. 325,153. (No model.)

To all whom it may concern:

Be it known that I, WINFIELD S. J OBES, a resident of Vest Leisenring,in the county of Fayette and State of Pennsylvania, have invented a newand useful Improvement in Brakes for Cars or \Vagons, of which thefollowing is a full, clear, and exact description.

My invention relates to an improvement in brakes for cars or wagons, andparticularly to a type of cars or heavy wagons used in coal or oremines, the object being to provide such vehicles with simple, strong,and reliable brake mechanism which is adapted to be operated manuallyfrom the sides or one end of the car or wagon, as may be necessary.

With this obj ect in View my invention con sists in the construction andcombination of parts, as hereinafter described, and indicated in theclaims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in both the figures.

Figure 1 is a side elevation of a coal or ore car, technically known as.a wagon, having the improved brake mechanism in position, the brakesbeing shown as set to hold the car by the full lines, off brakes beingrepresented in dotted lines and Fig. 2 is a bottom plan View of the carand attached brakes, the latter being set to hold the car.

A represents the body of a four-wheeled car to which the brake mechanismis applied. On the under surface of its frame-timbers A the journal endsof the axles B B are revolubly secured by boxes 0, the wheels 0 0 beingaffixed to the axles inside of these longitudinal frame-timbers, asshown in Fig. 2. The pair of wheels C 011 the axle B are located asuitable distance from the wheels C on the other axle to afford roombetween their peripheries for the introduction of the brakes.

Centrally between the treads of the two pairs of wheels a transverserock-shaft D is supported by the looped bolts 1), which engage journalsformed on the shaft and permit it to rock, while they retain it securedbelow and to the longitudinal timbers A.

On each end of the rock-shaft D a crankarm D is formed or secured. Thesearms lie in the same plane and are of equal length.

Upon the rock shaft D, inside of its supports 1), two cross-bars aremounted. These are perforated near their longitudinal centers forattachment to the rock-shaft, as shown in Fig. 2, thus affording fourarms F of equal length, which project in pairs oppositely and arepivoted at their ends f to the brake-shoes (Z, holding said shoes inproper position to engage the treads of the four wheels ,0 C.

A bail-shaped brake-lever E E is pivoted by the terminal ends 6 of itsparallel limbs E to the sides of the ear-body at opposite points,bracket-plates a being provided to aid in sustaining the ends of thelimbs and permit them to be vibrated. The transverse bar E, connectingthe limbs E, and preferably made integral with them, is located acrossthe end of the car-body outside of the same in convenient position foraccess thereto when the brake-shoes are to be adjusted either from theend of the car or the sides of the same.

The limbs E of the bail-shaped brake-lever are respectively connected tothe corresponding rock-shaft arms D by the duplicate links G, that arepivoted by their lower ends to the crank-arm ends, as at '6, their upperextremities being similarly secured to the limbs E at such a distancefrom the terminal ends of said limbs as to afford a nearly uprightposition to the links when the brakeshoes d are in contact with thetreads of the wheels 0.

Spaced perforations m are formed in the links G near their upper ends toallow the points of pivotal connection of the links and limbs to bechanged, and thus afford means for adjustment of the baillever when theshoes d become worn and the cross-bar E of the lever dropped too low foreffective use.

The length of the shoe-supporting arms F is so proportioned to thethickness of shoes cl and space between the treads or faces of thewheels 0 C that when the shoes are set in contact with these treads thearms will be in the same diagonal plane, so that the shoes which engageopposite wheel-treads on the same side of the car will be wedgedforcibly against the same by a downward movement of the cross-bar E, alifting of said bar instantly releasing the shoes.

A hook o is provided that is fastened by a staple to the end of thecarin proper position to engage the cross-bar E and hold the brakeshoesaway from the wheels.

Construction of the parts as stated affords powerful compound levers oneach side of the car, which can be moved simultaneously to set orrelease the brake-shoes by the bar E. The location of the shoes andtheir points of pivotal connection with the arms F above and below thecenters of the axles B B produce toggle-joints at these points f, sothat a slight exertion of force upon the cross-bar E to depress it willforce the shoes in'opposite directions and wedge them tightly againstthe wheels.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- 1. The combination, with a car or wagon bodyand revoluble axles having wheels secured thereon, of a bailshaped leverpivoted by the ends of its limbs to the sides of the body, a rock-shaft,two crank-arms secured to the ends of the rock-shaft, inclinedshoesupporting arms affixed to the ends of rockshaft, shoes pivoted tothe ends of these arms, and links which connect the crankarms to thelimbs of the bail-shaped lever, substantially as shown and described.

2. The combination, with a car or wagon body, a bail-shaped lever, twobracket-plates secured to the body rigidly and pivotally supporting thelever ends, two axles revolubly secured to the timbers of the body, andtwo wheels rigidly mounted on each axle, the pairs of wheels beingspaced apart to receive brake mechanism between them, of a transverserock-shaft, t'wo crank-arms attached to the ends of the rock-shaft,shoe-supporting arms secured on the rock-shaft in the same diagonalplane, four brake-shoes jointed to the ends of the shoe-supporting arms,and two links which loosely connect the crank-arms with the limbs of thebail-shaped lever, substantially as set-forth.

3. In a car or wagon brake, the combination, with a body and wheelssecured on axles adapted to revolve on the body, of a transverserock-shaft located between the wheels, shoe-supporting arms mounted onthe rockshaft and lying in the same inclined plane, shoes jointed tothese arms, crank-arms secured to the ends of the rock-shaft, sidelevers pivoted at their inner ends to the body, links G, pivoted attheir upper and lower ends to the side levers and crank-arms,respectively, and provided with the adjustingholes m, whereby wear ofthe jointed shoes may be compensated for, all substantially as shown anddescribed.

WVINFIELD S. JOBES.

WVitnesses:

THOMAS H. FENN, J. O. \VORK.

